[Bug c/101952] New: SH4 ICE: Error: unaligned opcodes detected in executable segment

[Bug c/101952] New: SH4 ICE: Error: unaligned opcodes detected in executable segment

[giulio.benetti at benettiengineering dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952

            Bug ID: 101952
           Summary: SH4 ICE: Error: unaligned opcodes detected in
                    executable segment
           Product: gcc
           Version: 11.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: giulio.benetti at benettiengineering dot com
  Target Milestone: ---

When building package bullet on buildroot we get this error:
'''
[ 40%] Building CXX object
src/BulletDynamics/CMakeFiles/BulletDynamics.dir/MLCPSolvers/btLemkeAlgorithm.o
/tmp/ccvpRXwT.s: Assembler messages:
/tmp/ccvpRXwT.s: Error: unaligned opcodes detected in executable segment
make[3]: *** [src/BulletDynamics/CMakeFiles/BulletDynamics.dir/build.make:560:
src/BulletDynamics/CMakeFiles/BulletDynamics.dir/MLCPSolvers/btDantzigLCP.o]
Error 1
make[3]: *** Waiting for unfinished jobs....
[ 41%] Linking CXX shared library libConvexDecomposition.so
'''

To reproduce it:
'''
# git clone git://git.busybox.net/buildroot
# wget https://git.busybox.net/buildroot-test/tree/utils/br-reproduce-build

- modify BASE_GIT=... with your buildroot path in br-reproduce-build then:
# chmod a+x br-reproduce-build
# ./br-reproduce-build 32bfaf0aae57ed18c18e82a72a958af9b3e1b241
'''

[Bug target/101952] SH4 ICE: Error: unaligned opcodes detected in executable segment

[thomas.petazzoni@free-electrons.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952

Thomas Petazzoni <thomas.petazzoni@free-electrons.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |thomas.petazzoni@free-elect
                   |                            |rons.com

--- Comment #1 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> ---
Giulio: to help gcc developers, you should add a pre-processed version of the
file that exhibits the issue. It is a lot easier for them than running the
whole Buildroot build.

[Bug target/101952] SH4 ICE: Error: unaligned opcodes detected in executable segment

[giulio.benetti at benettiengineering dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952

--- Comment #2 from Giulio Benetti <giulio.benetti at benettiengineering dot com> ---
Created attachment 51334
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51334&action=edit
Pre-processed btDantzigLCP.cpp(btDantzigLCP.ii)

As suggested by Thomas here is pre-processed btDantzigLCP.cpp(btDantzigLCP.ii)
to help you fix the bug.
btDantzigLCP.S follows.
Hope this is enough, otherwise ask me and I'll provide what you need.

Thank you

[Bug target/101952] SH4 ICE: Error: unaligned opcodes detected in executable segment

[giulio.benetti at benettiengineering dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952

--- Comment #3 from Giulio Benetti <giulio.benetti at benettiengineering dot com> ---
Created attachment 51335
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51335&action=edit
Pre-processed btDantzigLCP.cpp(btDantzigLCP.s)

Here is the assembler file too.